The content you've requested is available without charge only to active Sigma Xi members and American Scientist subscribers.
If you are an active member or an individual subscriber, please log in now in order to access this article.
If you are not a member or individual subscriber, you can:
Olshansky and his fellow demographers argue that human beings, like race cars, are not designed to fail; they are simply not designed for extended operation. In this analogy, the finish line for human beings is the successful reproduction and raising of offspring. The reason that many individuals live far beyond their reproductive years is due to the robust engineering built into the species by natural selection. Modern medical technologies and modified lifestyles have extended the post-reproductive years in industralized societies by protecting the individual from the harsh conditions in which our species evolved.
Connect With Us:
An early peek at each new issue, with descriptions of feature articles, columns, and more. Every other issue contains links to everything in the latest issue's table of contents.News of book reviews published in American Scientist and around the web, as well as other noteworthy happenings in the world of science books.
To sign up for automatic emails of the American Scientist Update and Scientists' Nightstand issues, create an online profile, then sign up in the My AmSci area.
JSTOR, the online academic archive, contains complete back issues of American Scientist from 1913 (known then as the Sigma Xi Quarterly) through 2005.
The table of contents for each issue is freely available to all users; those with institutional access can read each complete issue.
View the full collection here.
Receive notification when new content is posted from the entire website, or choose from the customized feeds available.